I am working on a Simplex Master Clock syncing problem. It uses a 6400 control center, and that runs a Simplex 2850-9003 transmitter. The transmitter seems to be working, as I can pick up the "tone" (3510Hz) with my hound anywhere near or inside the box. (Fox and Hound) Supposedly it transmits the signal throughout the entire schools AC wiring, and the 7645 clocks pick it up anywhere in the building they are plugged in. (2 wire AC) I am not picking up the signal at the clocks currently. I am trying to locate the break in signal. Does anyone have a hookup or wiring diagram on this 2850 unit? I need to understand how it's hooked in to the building wiring and proper operation so I can properly attempt to diagnose the problem. Thank you for your time.